Story thread · 2 reports / 2 sources

Neptune May Have Once Witnessed a Lunar Massacre That Turned Its Original Moons 'Inside Out'

smithsonianmag.com · 6dShare

A new study identifies an unexpected mineral in two of the planet’s inner moons, pointing to a destructive past in which a large object got pulled into the system and obliterated the former, larger satellites

First report: Were Neptune’s inner moons born from an ancient cataclysm? — earthsky.org, 6d